Improvement in tanning apparatus



2 Sheets--Sheet 1.

E. C. HASERICK.

Tanning-Apparatus. No. 159,510. Patented Feb. 9,1875.

UNITED SrATEs A'IEN FFIUE.

ERNEST O. HASERICK, OF MAYNARD, ASSIGNOR OF ONE-HALF HIS RIGHT TO GEORGEW. WILLIAMS, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN TANNING APPARATUS.

Specification forming part of Letters Patent No. 159,510, dated February9, 1875; application filed February 2, 1874.

To all whom it may concern:

Be it known that I, ERNEST E. HAsERIoK, of Maynard, in the county ofMiddlesex and State of Massachusetts, have invented an ImprovedApparatus for, and Process of, Tanning Hides and Skins; and I do herebydeclare that the following is a full and exact description thereof,reference being had to the accompanying drawings, making part of thisspecification- Figure 1 being a side elevation of the essential parts ofthe improved apparatus; Fig. 2, a top view of the same; Fig. 3, avertical section of a part of the apparatus in a plane indicated by theline 00 00, Fig. 2.

Like letters designate corresponding parts in all of the figures.

The principal parts of my improved tan-,

ning apparatus are a vat or vats, A, a pressureproducing pipe, B,extending upward from the vat or vats to a height properly of not lessthan thirty-three feet, and even as high as seventyflve or one hundredfeet with improved effect; a reservoir, 0, at the upper end of thepressure-pipe, to contain a supply of tan-liquor to produce thepressure; a second pressure-pipe, D, extending from the vat to thereservoir, and being surrounded by a steam-pipe, E, or its equivalent,for heating the liquor in the said pressure-pipe; a pipe, G, extendingfrom a leakage vessel or cistern, H, under or below the vat to thereservoir, and provided with a force-pump, I, whereby to pump up theleakings from the vat back to the reservoir, and, if desired, additionalsupplies ot' the tan-liquor, though that may be furnished to thereservoir by other means.

The tan-vat A is to be made strong enough to resist the pressure of theliquid in the pipes B D. It may be made of wood, as usual, or othersuitable material.

It has a sliding or equivalent cover, a, which has a packing, b, ofindia-rubber, or equivalent material, to prevent leakage under thepressure, and it is fastened on the vat by screw-bolts and nuts 0 c, orequivalent means.

Any leakage that takes place from the vat flows into the vessel H below,to be raised again to the reservoir 0 by the pump I.

The vat has a strainer, d, under the cover. to keep the pipes B D frombecoming choked by pieces of tan-bark getting therein.

The pipes B -D are connected with the vat A through the sides, orthrough the cover a, as shown, which, being required to be frequentlyremoved, may have a connectingjoint with the pipes readily separable byany suitable and known coupling, the pipes being jointed or swiveled, orotherwise constructed, so as to be readily moved to or away from it.

The main pressure-pipe B'may be surrounded with some material of slowheat-conducting properties, or otherwise equivalently protected fromfreezing cold in the winter.

The auxiliary pipe D, which either may extend entirely from the vat tothe reservoir, or may be connected with the main pipe B, between thesame, at the upper and lower ends, is provided with a suitablestop-cock, g, to regulate the quantity of liquid to be passed throughit, and the pipe B should have a stopcock, h, to let on or take off thepressure, when required.

The surrounding pipe E may be filled with exhaust steam, admittedthrough a pipe, f, from the exhaust-pipe of a steam-engine or othersource of heat; or the pipe D may extend through the flue of a chimney.

The pipes and the reservoir 0 are supported by a frame, L, or by abuilding or a chimney, as may be most convenient. Thus the heat of theliquid in the pipes and vat is regulated at pleasure to produce the bestresults according to experience.

I have found by experience that hides kept immersed in a tan-vat underthe pressure of the same, and in a very short time, so that thereby Iaccomplish in twenty-four hours what requires at least a month by theordinary tanning processes, and more evenly, since I tan the interior ofthe hides as completely as the outside thereof.-

In using this apparatus, the hides are alternately (as often as once aday, at least) im-.

The combination of the auxiliary pipe Dv and its heating pipe or case E,with the tanvat A and pressure-pipe B, substantially as and for thepurpose herein specified.

Specification signed by me this 13th day of October, 1873.

ERNEST O. HASERIOK. Witnesses:

JOHN HILL1s,. EDWARD S. HUNTRESS.

